Gateway Metals

As a highly versatile key mainstay metal, copper has been a building block of humanity’s progress. As a gateway metal, it yields access to critical minerals.  It also is an energy metal — an indispensable component for advanced energy technologies, ranging from EVs and wind turbines to the electric grid and solar panels.

But for all its traditional and new applications and surging demand in the context of the green energy transition, copper is currently not considered a “critical mineral” by the U.S. government.

A group of members of Congress have set out to change this, and have sent a letter to U.S. Department of the Interior Secretary Deb Haaland urging the designation of copper as an official U.S. Geological Survey Critical Mineral.

The letter sent by Sens. Kyrsten Sinema (Ind.-Ariz.), joined by Sens. Mark Kelly (D-Ariz.), Joe Manchin (D-W.Va.), Mike Braun (R-Ind.), Raphael Warnock (D-Ga.), and Mitt Romney (R-Utah) cites new findings by the Copper Development Association (CDA) indicating that copper’s increased supply risk surpasses the USGS threshold necessary to be added to the U.S. Government’s Critical Minerals List.

“By recognizing copper as a ‘critical mineral,’ the United States’ federal government can more effectively ensure a secure and reliable supply of domestic copper resources in the years to come at all points of the supply chain including recycling, mining, and processing. Given the enormous investment required, the time lag for new sources of supply, and projected demand, time is of the essence,” wrote the Senators.

In a recent piece that also calls for a reassessment of copper’s current non-critical mineral designation, Cullen S. Hendrix with the Peterson Institute for International Economics argues that while copper is widely mined and processed relative to listed critical minerals on the U.S. government’s list, “the security of diffuse global supply chains and production in US-friendly economies is still vulnerable to disruptions in producer countries. The ability and willingness of copper producing countries to keep supplying copper can change rapidly.”

He points to current trends in Peru, a key copper mining country, where resource nationalism has reared its head, as well as developments in neighboring Chile, that may indeed affect both countries’ “ability and willingness” to supply copper to the global market and elaborates that “designating copper as critical to national and economic security would lead to enhanced scrutiny from the USGS, which tracks minerals markets, production, and reserves. Industry advocates also believe that the designation might lead to streamlined permitting processes that would facilitate more domestic production.” 

In an interview, Sen. Sinema said that “[t]his should be a no-brainer,” adding that “[w]e have major gaps in both our ability to mine and process these minerals to ensure our energy security for the future, and the administration knows how important copper is to our domestic and national security.”

As followers of ARPN well know, ARPN’s Daniel McGroarty has called for the designation of copper as a critical mineral on several occasions, and has submitted public comments to USGS to this effect.

The U.S. Government Critical Mineral List is updated at least every three years and saw its last update in late 2022, but the underlying statute stipulates that the Secretary of the Interior can designate additional materials to be added — and with  geopolitical tensions and resource nationalism on the rise against the backdrop of surging copper demand, now would be a good time to change copper’s designation to “critical.”

Recent media coverage might have you believe critical mineral policy only revolves around the “battery criticals”lithium, graphite, nickel, cobalt and manganese, and maybe the frequently referenced, though still somewhat obscure rare earths.  However, as followers of ARPN well know, this is far from the truth.

The New South Wales Department of Planning and environment has taken a closer look at solar panels, which, just like EV batteries, are at the core of the green energy transition, and outlines the top four metals and minerals that make solar panels work: 

Copper — a mainstay metal with perhaps unrivaled versatility, lending itself to a wide range of traditional and new applications,  and yields access to other critical minerals as a “gateway metal,” an indispensable component for advanced energy technology, ranging from EVs and wind turbines to the electric grid and solar panels.

For some of our most recent coverage of Copper, click here.

Silicon — the most abundant compound in the Earth’s crust, silicon takes the form of ordinary sand, quartz, rock crystal, amethyst, agate, flint, jasper, and opal. To produce pure silicon, the compound is hearted with carbon at extra high temperatures.  The material is used extensively in electronics because of its semiconducting properties. It is used in the manufacture of next-gen 5-nanometer (5nm) semiconductor chips, and is a key component of solar panels and photovoltaic cells.

For ARPN’s recent coverage of Silicon, click here.

Silver — By definition a “precious” metal like gold, it may come as a surprise to those who see silver primarily as shiny adornment or a means to store value that the biggest end users of silver may actually be specialized industries. More recently, the metal has evolved from “money metal to techno metal,” as North of 60 Mining News’s Shane Lasley termed it, with its true value lying in “more industrious properties that make it invaluable to high-tech applications such as solar panels, electric vehicles, and 5G networks.”

For Shane Lasley’s Treatment of Silver in the 2021 issue of “Critical Mineral Alliances” click here.

Zinc — primarily used in metallurgical applications, zinc is also a Gateway metal, yielding access to “criticals” Indium and Germanium. Today, zinc is also seeing greater application in green energy technology.

For examples of ARPN coverage of Zinc, click here and here.

These four may not make the top of the hour news at the moment, but silicon, for example, appears on the Australian and European Union’s critical minerals lists, while zinc, previously not on the U.S. Critical Minerals List, was afforded critical mineral status by the U.S. Government earlier this year, and is also deemed critical by the Canadian government.

As for copper – which Canada considers a critical mineral – followers of ARPN well know that there are good reasons to include Copper into the U.S. Government’s Critical Minerals List, and ARPN’s Daniel McGroarty has consistently argued in favor of doing so via public comments during the draft process of both the initial 2018List and its 2022 iteration.

See McGroarty’s public comments on the U.S. Critical Minerals Lists here and here.

The bottom line is, while people appear to be laser focused on achieving the green energy transition via securing supply chains for the battery criticals and rare earths, the issue is bigger than this limited group of metals and minerals.  With the materials science revolution continuing to yield research breakthroughs at neck-breaking speeds, demand scenarios for metals and minerals will be subject to change.

It is clear that in the words of Forbes contributor Wal van Lierop, “[w]ithout massive investments in base metals and key minerals, Europe and North America will fail to meet their carbon emission targets and face a new form of energy insecurity,” — but these investments have to be made in the context of a broad-based “all of the above” strategy.  

The mainstream media and parts of the political establishment may just now have begun to realize it — but followers of ARPN have long known that our nation’s critical mineral woes are real, and go beyond the often discussed battery criticals (lithium, cobalt, nickel, graphite, and manganese) and include one of the key mainstay metals: [...]

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With the addition of 15 metals and minerals bringing the total number up to 50, this year’s draft updated Critical Minerals List, for which USGS just solicited public comment, is significantly longer than its predecessor. This, as USGS notes, is largely the result of “splitting the rare earth elements and platinum group elements into individual entries [...]

Current news coverage may have you believe that when it comes to critical minerals, all we’re talking about is Rare Earths and battery tech metals, such as Lithium, Cobalt, Manganese, Nickel and Graphite. However, while certainly extremely important for 21st Century technology, these materials and the sectors in which they find key applications only represent [...]

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As demand for critical minerals is increasing in the context of the global shift towards a green energy future, Canada’s Minister of Resources Seamus O’Regan Jr. earlier this week announced the release of a Canadian list of 31 metals and minerals deemed critical “for the sustainable economic success of Canada and our allies—minerals that can [...]

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